nowadays petroleum and coal are used as main energy, but as finite non-renewable energy that would be given out some day. and fueling these may cause a series of environmental problems. however nuclear energy is a new unexhaustible new energy, it does no harm to environment and has a wide developmental prospect. though we can not figure out some nuclear wastes due to the restraint of technology of humanbeings. but i believe one day the nuclear energy will take place of ordinary energy as petroleum and become an important kind of energy .

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but as today's nuclear power crisis is just an accident. as long as take rational measure, this kind of events may be prevented.